Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 3937
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Yesterday
F9 3937 · SJU → BDL
departs 8:45 AM AT · arrives 12:47 PM ET
Forecast issued Sat 10:00 PM ET · 13h after departure
Watch this flight
Other days
Sat 10/3
Today 19%
Mon 10/5 28%
Wed 10/7 36%
Fri 10/9 28%
Odds over time
Arrive at BDL more than 15 minutes late?
27%
chance · ±0 pts
−2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
27%
Leave 15+ late
18%
Arrive 1h+ late
9%
Cancelled
1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.4d
2d
1d
12h
6h
Departs
Lands
Arrive at BDL more than 15 minutes late?
Calm-weather odds: 27% · changed −2 pts in 24h
−2 pts
27%
Yes 27%
No 73%
Leave SJU more than 15 minutes late?
Calm-weather odds: 18% · changed −21 pts in 24h
−21 pts
18%
Yes 18%
No 82%
Arrive at BDL more than an hour late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: 1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to BDL?
On time or early
72%
15–30 min late
12%
30 min–1 hour late
6%
1–2 hours late
5%
Over 2 hours late
4%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
This flight has been late 26% of the time recently
↑
SJU is prone to delays
↓
Early flights usually leave on time
↓
8am departures from SJU are usually not late
Weather at each end
SJU (origin)
Gusts 25 kt Ceiling 8,500 ft Visibility 10+ mi Precip none
BDL (destination)
Gusts 15 kt Ceiling none (clear) Visibility 10+ mi Precip none
How this resolves
Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.
Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.